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Jackson Demonstration State Forest has a number of water temperature monitoring sites and they are displayed above. The red and blue designations indicate whether a site has a floating weekly average water temperature exceeded 16.8 C in any year measured. Image from the KRIS Big River Map project. The sites are 527 at upper JDSF boundary, 530 above Chamberlain, 531 below Chamberlain and 532 at the lower JDSF boundary.